M32CSLASH8B datasheet(203/406 Pages) RENESAS

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M32C/8B Group

16. Three-Phase Motor Control Timer Function

Preliminary specification

Specifications in this manual are tentative and subject to change.

REJ09B0450-0050 Rev.0.50 Oct 31, 2008

Page 186 of 385

Figure 16.8

TB2 Register, DTT Register when Using Three-Phase Motor Control Timer Function

Symbol

TB2

Address

0355h - 0354h

After Reset

Undefined

Function

Timer B2 Register(1)

If a setting value is n, f1 is divided by n+1.

Timers A1, A2, and A4 start every time timer B2 underflows.

NOTE:

1. Read and write this register in 16-bit units.

Setting Range

0000h to FFFFh

b15

Symbol

DTT

Address

030Ch

After Reset

Undefined

Function

Dead Time Timer(1, 2, 3)

This one-shot timer is used to delay the timing for a turn-on signal

to be switched to its active level in order to prevent the upper and

lower arm short circuit.

If a setting value is n, the count source is counted n times after the

start trigger occurs, and then the timer stops.

NOTES:

1. Read-modify-write instructions cannot be used to set the DTT register. Refer to Usage Notes for details.

2. The DTT register setting is enabled when the INV15 bit in the INVC1 register is set to 0 (dead time enabled). No dead time is

generated when the INV15 bit is set to 1 (dead time disabled).

3. The INV16 bit in the INVC1 register determines the start trigger of the DTT register. The INV12 bit determines the count source.

Setting Range

01h to FFh

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